/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/ParticleHandle.h
Concrete can either be the game thread or physics representation, but API stays the same. Useful for keeping initialization and other logic the same
namespace Chaos { template<typename T, int d, typename FConcrete> void Chaos::GeometryParticleDefaultConstruct ( FConcrete & Concrete, const [FGeometryParticleParameters](API\Runtime\Chaos\Chaos\FGeometryParticleParameters) & Params ) }